Journal
ORGANIC ELECTRONICS
Volume 12, Issue 7, Pages 1103-1107Publisher
ELSEVIER
DOI: 10.1016/j.orgel.2011.03.025
Keywords
Photodiode; ZnO; Pentacene; Semi-transparent; Thin-film transistor
Funding
- NRF [2011-0000375]
- MKE [2006-S-079-5]
- Seoul RBD Program [ST090839]
- Brain Korea 21 program
- Agency of Defense Development (ADD)
- National Research Foundation of Korea [2009-0079462, 과06A1104, 2010-0012991] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Semi-transparent organic-inorganic hybrid photo-detector cells were fabricated on glass substrate, composed of pentacene/ZnO photodiodes and pentacene thin-film transistors (TFTs). Semi-transparent NiOx window with a large band gap of similar to 4 eV was used as an ohmic electrode on 50 nm-thin pentacene channel in the TFT and simultaneously on the 150 nm-thick pentacene layer, which is deposited on ZnO for p-n diode, to absorb visible and ultraviolet photons from pentacene and ZnO, respectively. Our photo-detector exhibited a minimum temporal response of similar to 300 ms for photo-induced output voltage at -1 V input and -3 V supply voltage. (C) 2011 Elsevier B.V. All rights reserved.
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